A Complete Collection of 100000 Whys
Fav十万个为什么
为什么冰面撒盐能融化？
简单的摘要：冰面撒盐能融化主要是由于盐降低了冰的冰点、盐溶解形成盐水溶液、以及盐水溶液的冰点低于纯水冰点。
1、盐降低了冰的冰点：当盐撒在冰面上时，盐会与冰接触并开始溶解。溶解的盐会与冰中的水分子发生作用，破坏冰的晶体结构，从而降低冰的冰点。
2、盐溶解形成盐水溶液：盐溶解在冰表面的水中，形成盐水溶液。盐水溶液的冰点低于纯水的冰点，因此即使温度低于0°C，盐水溶液也能保持液态。
3、盐水溶液的冰点低于纯水冰点：由于盐水溶液的冰点低于纯水冰点，冰面上的盐水溶液会继续吸收热量，使冰逐渐融化。这个过程会持续进行，直到冰面完全融化或盐被稀释到不再有效为止。
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